Skip to main content
. Author manuscript; available in PMC: 2013 Nov 28.
Published in final edited form as: Neuroimage. 2013 Apr 13;78:68–74. doi: 10.1016/j.neuroimage.2013.04.022

Table 2.

Susceptibilities of ferritin phantoms as quantified from SWI phase data (TE = 21.73 ms) and iron concentrations measured by XRF and ICPMS. Data are shown as mean ± one standard deviation.

Sample no. 1 Sample no. 2 Sample no. 3 Sample no. 4 Sample no. 5 Sample no. 6 Gelatin solution (7%)
Susceptibility (ppb) (N = 19,205) 840 ± 2.4 428 ± 1.3 271 ± 0.9 101 ± 0.4 39 ± 0.3 −14 ± 0.2 N.A. for forward fitting
XRF iron concentration (μg/ml) (N = 961) 790 ± 94 395 ± 44 229 ± 32 110 ± 27 77 ± 16 (Not available) (Not available)
ICPMS iron concentration (μg/ml) 772 ± 115 448 ± 67 240 ± 36 127 ± 19 66 ± 10 39 ± 6 0.23 ± 0.11

Standard deviation includes the spatial distribution variation in the straws.